CN1530945A - Transparent slice for optical information recording medium, producing method thereof and optical information recording medium - Google Patents
Transparent slice for optical information recording medium, producing method thereof and optical information recording medium Download PDFInfo
- Publication number
- CN1530945A CN1530945A CNA2004100082031A CN200410008203A CN1530945A CN 1530945 A CN1530945 A CN 1530945A CN A2004100082031 A CNA2004100082031 A CN A2004100082031A CN 200410008203 A CN200410008203 A CN 200410008203A CN 1530945 A CN1530945 A CN 1530945A
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- China
- Prior art keywords
- recording medium
- optical information
- information recording
- coverlay
- adhesive coating
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/22—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts
- F16L33/223—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts the sealing surfaces being pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L33/224—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts the sealing surfaces being pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts a clamping ring being arranged between the threaded member and the connecting member
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/14—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of indefinite length
- B29C39/18—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of indefinite length incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/20—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members
- F16L33/207—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
- F16L33/2071—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
- G11B7/265—Apparatus for the mass production of optical record carriers, e.g. complete production stations, transport systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
- G11B7/24073—Tracks
- G11B7/24079—Width or depth
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/21—Circular sheet or circular blank
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Optical Record Carriers (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
A method for manufacturing the transparent sheet for the optical information recording medium includes a step for providing a hard coat layer by successively applying a radiation curing resin coating liquid on one surface of a cover film wound around like a roll so that the formed coating film is successively irradiated with radiation so as to be cured; a step for successively providing an adhesive layer on the other surface of the cover film; and a step for winding the cover film provided with the hard coat layer and the adhesive layer, again into the roll-like shape. The invention provides a method for manufacturing a transparent sheet for an optical information recording medium, having high productivity and proper thickness precision, a transparent sheet for the optical information recording medium manufactured by the manufacturing method, and an optical information recording medium having the transparent sheet for the optical information recording medium are also obtained.
Description
Technical field
The present invention relates to a kind of optical information recording medium with the manufacture method of transparent sheet, with the optical information recording medium of this manufacture method manufacturing with transparent sheet and have the optical information recording medium of this optical information recording medium with transparent sheet.
Background technology
As everyone knows, the optical information recording medium that can only write down primary information by laser is called CD-R, and it has the advantage that can reproduce with commercially available CD player, and recently along with the popularizing of personal computer, and the demand of CD-R is also had the trend that increases.In addition, as the recording medium that can carry out greater than the CD-R capacity, but the Worm type imprinting digital video disk (so-called DVD-R) that is used for high definition digital video recording etc. also is in the practical stage.
A kind of as in the structure of these Worm type optical information recording mediums, the recording layer of be known that on disc wafer reflection layer that lamination successively is made up of Au etc., being made up of organic compound and comprising is used for the tectal structure with the bonding adhesive coating of this recording layer.By from above-mentioned resin bed side irradiating laser, can write down and reproduce.When Worm type optical information recording medium recorded information, can be by the laser radiation part absorbing light that makes recording layer locally heat release distortion (for example, groove etc. generation) takes place finish.On the other hand, the reproduction of information is passed through to the irradiation of Worm type optical information recording medium usually and is write down the laser of using the identical wavelength of laser, and the difference of the reflectivity of the position (recording section) that heating is out of shape in the detection record layer and undeformed position (non-recorded part) is carried out.
Recently, network such as the Internet and high definition TV promptly popularize.In addition, also begun the projection of HDTV (High Definition Television).Under this situation, needing can be cheap and the jumbo optical information recording medium of recording picture information easily.Above-mentioned DVD-R has fully played the effect as jumbo recording medium under existing conditions, but also more and more higher to the requirement of high capacity, densification, therefore need develop the recording medium that can satisfy these requirements.Therefore, the optical information recording medium of developing at present is to carry out recording medium high density recording, more jumbo with short wavelength's light more.Particularly, the Worm type optical information recording medium that can only write down primary information improves gradually in the long preservation of high capacity information or the frequency of utilization in the backup purposes, so press for this recording medium of exploitation.
Usually, the densification of optical information recording medium can be dwindled electron-baem spot by record and the high NAization of reproducing short wavelengthization with laser, object lens and realizes.Recently, red semiconductor laser by wavelength 680nm, 650nm and 635nm carries out apace to the exploitation of the bluish violet semiconductor laser (hereinafter referred to as bluish violet color laser) of the 400nm-500nm wavelength of the record that can carry out further super-high density, and the exploitation of the optical information recording medium corresponding with it is also carried out.Particularly after bluish violet color laser is sold, the optical recording system that utilizes this bluish violet color laser and high NA pick-up is also just developed and studies, and have phase change recording layers can rewriting type optical information recording medium and the optical recording system disclosed as DVR system (" ISOM2000 " 210-211 page or leaf).Therefore, the problem for the densification aspect can rewriting type optical information recording medium has obtained certain achievement.
The optical information recording medium that uses in the optical recording system that utilizes aforesaid bluish violet color laser and high NA pick-up to recording layer irradiation bluish violet color laser the time, in order to concoct the object focal point of high NA, preferably makes the overlayer attenuation of laser incident.Here, overlayer can use clear films, and utilizes cementing agent or sticker to be bonded on the recording layer.Tectal thickness generally includes the tack coat that solidify to form by cementing agent or sticker and adhesive coating at the interior 100 μ m that are about, but can carry out optimization according to optical maser wavelength of being shone and NA.Because this optical information recording medium utilizes high NA pick-up as described above, so have that pick-up is little with tectal interval, pick-up and overlayer contacted, are easy to generate scar on overlayer by the pimple of optical information recording medium a problem.
For this problem, usually suggestion is provided with anti-affected layer and hard membrane layer with spin coating method and vacuum method of piling on overlayer, and then the method that prevents the overlayer damaged is (for example, with reference to patent gazette 1,2.)。But,, have the low problem of throughput rate because these anti-affected layers and hard membrane layer are arranged on the overlayer with single sheet type.In addition, when this anti-affected layer and hard membrane layer were set with spin coating method, because centrifugal force, the outer layer that encloses part is thickening easily, thereby had the problem of the precision deficiency of this thickness.
[patent gazette 1]
The spy opens the 2000-67468 communique
[patent gazette 2]
Specially permit communique No. 3112467
Summary of the invention
Therefore, the object of the present invention is to provide the good optical information recording medium of throughput rate height and thickness and precision with the manufacture method of transparent sheet, with the optical information recording medium of this manufacture method manufacturing with transparent sheet and have the optical information recording medium of this optical information recording medium with transparent sheet.
The inventor finds, the optical information recording medium that has the overlayer be made up of the coverlay that is provided with adhesive coating and hard membrane layer at the same time is with in the manufacture method of transparent sheet, by these layers are set continuously, can boost productivity, in addition, by continuously coating hard membrane layer is set, can improves thickness and precision, so far finished the present invention.
That is, the present invention is
＜1〉a kind of optical information recording medium manufacture method of transparent sheet, it is characterized in that, process: on a face of the coverlay that is wound into the cylinder shape, apply radiation-curing resin coating liquid continuously, to the formed Continuous irradiation radioactive ray of filming, the operation of hard membrane layer is set by making its curing; The operation of adhesive coating is set on another face of above-mentioned coverlay continuously; Be wound into the operation of cylinder shape once more with the above-mentioned coverlay that will be provided with above-mentioned hard membrane layer and above-mentioned adhesive coating.
＜2〉a kind of optical information recording medium manufacture method of transparent sheet, it is characterized in that, process: on a face of the coverlay that is wound into the cylinder shape, apply radiation-curing resin coating liquid continuously, shine radioactive ray continuously to formed filming, the operation of hard membrane layer is set by making its curing; The operation of adhesive coating is set on another face of above-mentioned coverlay continuously; Be punched to discoid operation with the above-mentioned coverlay that will be provided with above-mentioned hard membrane layer and above-mentioned adhesive coating.
＜3〉a kind of optical information recording medium transparent sheet is characterized in that, with＜1〉or＜2 in the manufacture method of record make.
＜4〉a kind of optical information recording medium is characterized in that, sets gradually recording layer and＜3 on substrate〉in the record optical information recording medium form with transparent sheet.
Also have,＜1 and＜2 in: on a face of the coverlay that is wound into the cylinder shape, apply radiation-curing resin coating liquid continuously,, the operation of hard membrane layer is set by making its curing to the formed Continuous irradiation radioactive ray of filming; And on another face of above-mentioned coverlay, be provided with continuously between the operation of adhesive coating, the operation that the above-mentioned coverlay that will be provided with above-mentioned hard membrane layer is wound into the cylinder shape once more also can be set.
In addition, even＜2〉in: on another face of above-mentioned coverlay, be provided with continuously adhesive coating operation and; The above-mentioned coverlay that is provided with above-mentioned hard membrane layer and above-mentioned adhesive coating is punched between the discoid operation, the operation that the above-mentioned coverlay that will be provided with above-mentioned hard membrane layer and above-mentioned adhesive coating is wound into the cylinder shape once more also can be set.
Embodiment
Below, to optical information recording medium of the present invention with the manufacture method of transparent sheet, with the optical information recording medium of this manufacture method manufacturing with transparent sheet and have this optical information recording medium and be elaborated with the optical information recording medium of transparent sheet.
At first, the manufacture method of optical information recording medium of the present invention with transparent sheet described.
The 1st optical information recording medium of the present invention is characterized in that with the manufacture method of transparent sheet, process
(a) on a face of the coverlay that is wound into the cylinder shape, apply radiation-curing resin coating liquid continuously, to the formed Continuous irradiation radioactive ray of filming, the operation of hard membrane layer is set by making its curing;
(b) operation of adhesive coating is set continuously on another face of above-mentioned coverlay; With
(c) the above-mentioned coverlay that will be provided with above-mentioned hard membrane layer and above-mentioned adhesive coating is wound into the operation of cylinder shape once more.
Below, each operation is described.
[(a) on a face of the coverlay that is wound into the cylinder shape, apply radiation-curing resin coating liquid continuously,, the operation of hard membrane layer be set] by making its curing to the formed Continuous irradiation ultraviolet ray of filming
In (a) operation, the top of the coverlay that is wound into the cylinder shape is exported to the area of application of regulation, from the top of a face of this coverlay to end, apply radiation-curing resin coating liquid continuously, after formation is filmed, to these Continuous irradiation radioactive ray of filming, make the radiation-curing resin solidification successively, thereby form hard membrane layer.Thus, on the whole zone of a face of coverlay, form hard membrane layer.
As the coverlay that in (a) operation, uses, so long as the film of transparent material just limits the still preferred acryl resins such as polycarbonate, polymethylmethacrylate that use especially; Vinyl chloride resin such as polyvinyl chloride, vinyl chloride copolymer; Epoxy resin; Unbodied polyolefin; Polyester; Cellulose triacetates etc. wherein, also more preferably use polycarbonate or cellulose triacetate.
Also have, the light that so-called " transparent " uses when being meant with respect to record and reproduction, transmitance is more than 80%.
In addition, in the scope that does not hinder effect of the present invention, also can contain various adjuvants in the coverlay.For example, also can contain the UV absorbing agent that is useful on the light that cuts off the following wavelength of 400nm and/or be used to cut off the pigment of the light more than the 500nm.
As the surface physical property of coverlay, the two-dimensional parameter of preferred surface roughness and three-dimensional parameter are all below 5nm.In addition, the viewpoint of the optically focused degree of the light that uses during from record and reproduction, the birefringence of coverlay is preferably below 10nm.
In addition, as the coverlay of cylinder shape, for example can use the coverlay of winding film on the axle of 150mm φ with wide 150mm, long 200m.
The thickness of coverlay is preferably 0.03-0.15mm, more preferably 0.05-0.12mm.By being defined in such scope, operation is become easily, and, have the advantage that can suppress so-called coma aberration.
As the radiation-curing resin that in this (a) operation, uses,, more specifically, preferably in molecule, has the resin of two keys of two above radioactive ray functionalities so long as can use by the resin that radiation exposure solidifies.Can be exemplified as, for example, esters of acrylic acid, third rare amide-type, methyl acrylic ester, the rare amide-type of methyl-prop, allyl compound, ethene ethers, vinyl esters etc.Wherein, above acrylate compounds, methacrylate compound of two functional groups further preferably.
As two acrylate compounds more than the functional group, the object lesson of methacrylate compound can be enumerated with ethylene glycol diacrylate, the diacrylate propylene glycol ester, the diacrylate butanediol ester, hexanediol diacrylate, the diacrylate binaryglycol ester, the diacrylate triglycol ester, diacrylate TEG ester, diacrylic acid pentyl diol ester, diacrylate tripropylene glycol ester, Ethylene glycol dimethacrylate, the dimethyl allene acid propylene glycol ester, tetramethylene dimethacrylate, dimethacrylate hexanediol ester, diethyleneglycol dimethacrylate, the dimethacrylate triglycol ester, dimethacrylate TEG ester, the dimethacrylate DOPCP, dimethacrylate tripropylene glycol ester etc. is the addition acrylic acid on aliphatic diol of representative, the material that methacrylic acid forms.
In addition, also can use on polyether glycols such as polyglycol, polypropylene glycol, polytetramethylene glycol addition acrylic acid, methacrylic acid and the polyether acrylate, the polyethers methacrylate that obtain; Addition acrylic or methacrylic acid on the polyester polyol that obtains by known dibasic acid and glycol and the polyester acrylate, the polyester methacrylate that obtain.
In addition, also can use urethane acrylate, the urethane methacrylate that addition acrylic acid, methacrylic acid form on the polyurethane that forms making the reaction of known polyvalent alcohol or glycol and polyisocyanate.
In addition, also can use the material that addition acrylic acid, methacrylic acid form on bisphenol-A, Bisphenol F, hydrogenated bisphenol A, A Hydrogenated Bisphenol A F or their alkylene oxide adducts; Cyamelide epoxyalkane modification diacrylate, cyamelide epoxyalkane modified methyl acrylic, tricyclodecane methanol diacrylate, tricyclodecane methanol dimethylacrylate etc. have the material of ring texture.
These radiation-curing resins both can use a kind of, also can more than two kinds and use.
In the middle of these resins, the preferred resin that can be cured that uses by the ultraviolet ray irradiation, that is, and ultraviolet curable resin.
As the radioactive ray that are used to make above-mentioned radiation-curing resin solidification, can use electron ray and ultraviolet ray.When using ultraviolet ray, preferably in ultraviolet curable resin coating liquid, add Photoepolymerizationinitiater initiater shown below.As this Photoepolymerizationinitiater initiater, preferably use aromatic ketone.Aromatic ketone is limited especially, but under the wavelength of preferred bright-line spectrum 254,313 at the mercury lamp that is often used as ultraviolet radiation source, 365nm, the material with bigger absorptivity.As its representation example, can be exemplified as acetophenone, benzophenone, benzoin ethyl ether, benzyl methyl ketal, benzyl ethyl ketal, benzoin isobutyl ketone, hydroxyl 3,5-dimethylphenyl ketone, 1-hydroxycyclohexylphenylketone, 2,2-diethoxy acetophenone, Michler ' s ketone etc.
The mixture ratio of aromatic ketone is the 0.5-20 mass parts with respect to 100 mass parts ultraviolet curable resins, preferred 2-15 mass parts, more preferably 3-10 mass parts.The material that adds Photoepolymerizationinitiater initiater in ultraviolet curable resin in advance has sale as the ultraviolet hardening sticker on market, can use this commercially available product among the present invention.As such commercially available product, can be exemplified as, for example, big Japanese ink system ダ イ キ ユ リ ア SD715, ダ イ キ ユ リ ア SD101, ス リ one ボ Application De system TB3042, Japanese chemical drug system KCD805 etc.
The radiation-curing resin that contains commercially available product can directly or by being dissolved in the appropriate solvent such as MEK, ethyl acetate be modulated into coating liquid, and is coated on the coverlay, and can use in the past known coating method as coating method this moment.Specifically, can be exemplified as coating methods such as spray-on process, rolling method, scraper plate method, doctor roll method, silk screen print method.
When using electron ray, can use the electron ray accelerator in order to solidify the radiation-curing resin.
As the ultraviolet light source that is used to solidify the radiation-curing resin, can use mercury lamp.As mercury lamp, preferably use the lamp of 20-200W/cm, and preferably use with the resin molding of 0.3-20m/min and the relative velocity of mercury lamp (that is, when mercury lamp is fixed, equaling to transport the speed of resin coating film).At this moment, ultraviolet curable resin film and mercury lamp between distance be preferably 1-30cm.
As the electron ray accelerator that in the radiation exposure device, uses, can adopt scan mode, dual scan mode or guard beam mode, wherein, preferred comparative price is cheap and can obtain powerful guard beam mode.As the electron ray characteristic, accelerating potential is 100-1000kV, preferred 150-300kV, and absorbed dose is 0.5-20Mrad, preferred 1-10Mrad., accelerating potential can not carry out the problem of polyreaction fully if, then existing the transit dose deficiency of energy sometimes less than 10kV.In addition, if accelerating potential greater than 1000kV, then exists the energy efficiency that is used for polymerization to descend and sub-economic problem sometimes.
By above operation, in (a) operation, on a face of coverlay, hard membrane layer can be set.Then,, the coverlay that will be provided with hard membrane layer can be set be wound into the operation of cylinder shape once more, and then carrying is become easily, can improve transfer efficiency thus in order easily it to be moved to operation shown below.
The operation of adhesive coating [(b) on another face of above-mentioned coverlay, be provided with continuously]
In this operation, on the another side of the coverlay that has formed hard membrane layer by (a) operation one side, adhesive coating is set continuously.As the method that adhesive coating is set, can roughly be divided into the method (hereinafter referred to as indirect method) that adheres to preformed adhesive coating and direct coating sticker and make its dry and method of forming adhesive coating on the surface of coverlay (hereinafter referred to as direct method.) wait two kinds of methods.
What is called during indirect method " adheres to the method for preformed adhesive coating " and is meant, by with the surface of the mold release film of the identical size of coverlay on apply sticker continuously, and make its drying, on the All Ranges of a face of mold release film, adhesive coating is set thus, afterwards with this adhesive coating attached to the method on the coverlay.Its result can be provided with the adhesive coating of mold release film on the All Ranges of another face of coverlay.
Direct method is, the top of the coverlay that is wound into the cylinder shape is delivered to the area of application of regulation, and apply sticker continuously to end from the top of a face of this coverlay, form thus and film, make this dried coating film afterwards successively, thereby the method for adhesive coating is set on the All Ranges of another face of coverlay.
In above-mentioned indirect method and direct method,, can use known in the past coating method as the coating method of sticker.Specifically, can be exemplified as spray-on process, rolling method, scraper plate method, doctor roll method, silk screen print method etc.
In addition, as drying means, can use known method in the past such as heat drying, forced air drying.
As the sticker that in this (b) operation, uses, can use acrylic compounds, rubber-like, silicon class sticker, but from viewpoint transparent, permanance, preferred acrylic compounds sticker.As this acrylic compounds sticker, preferably with 2-EHA, n-butyl acrylate etc. as principal ingredient, with the short-chain alkyl acrylate that is used to improve cohesive force and methacrylate for example methyl acrylate, ethyl acrylate, methyl methacrylate and can become the material that forms with copolymerization such as the acrylic acid of the crosslinking points of crosslinking chemical, methacrylic acid, acrylamide derivative, maleic acid, Hydroxyethyl Acrylate, glycidyl acrylates.By suitable adjusting principal ingredient, short chain composition be used to increase blending ratio, the kind of the composition of crosslinking points, can change glass transition temperature (Tg) and cross-linking density.
As with the crosslinking chemical of above-mentioned sticker and usefulness, can be exemplified as for example isocyanates crosslinking chemical, epoxy resin crosslinking chemical, melamine resin class crosslinking chemical, Lauxite class crosslinking chemical, chelate class crosslinking chemical, wherein, more preferably isocyanates crosslinking chemical.As such isocyanates crosslinking chemical, can use toluene support diisocyanate, 4,4 '-methyl diphenylene diisocyanate, HDI, xylylene diisocyanate, 1, isocyanates such as 5-naphthalene diisocyanate ester, ortho-aminotoluene isocyanates, isophorone diisocyanate, triphenylmethane triisocyanate, the product that also has these isocyanates and polyvalent alcohol, the polyisocyanate class that also has the condensation by isocyanates to generate.As the commercially available product of these isocyanates, can be exemplified as コ ロ ネ-ト L, コ ロ ネ-ト HL, コ ロ ネ-ト 2030, コ ロ ネ-ト 2031, ミ リ オ ネ-ト MR, ミ リ オ ネ-ト HTL that Japanese polyurethane society makes; ケ ネ-ト D-102, ケ ネ-ト D-110N, ケ ネ-ト D-200, ケ ネ-ト D-202 that force field medicine society makes; デ ス モ ジ ユ-Le L, デ ス モ ジ ユ-Le IL, デ ス モ ジ ユ-Le N, デ ス モ ジ ユ-Le HL etc. that Sumitomo バ イ エ Le society makes.
In (b) operation, on the another side of coverlay, form adhesive coating, and in following (c) operation, be wound into the cylinder shape, in order to prevent hard membrane layer and adhesive coating driving fit, also preferably on the surface of adhesive coating, adhere to mold release film.As mentioned above, in indirect method, can be pre-formed the state that is attached with mold release film.On the other hand, in direct method, after the surface of coverlay forms adhesive coating, preferably increase the operation that mold release film is sticked to this adhesive coating surface again.
As attached to the lip-deep mold release film of adhesive coating, can be exemplified as polyethylene film, pet film, PEN film, polycarbonate film, cellulose triacetate film etc. here.
[(c) coverlay that will be provided with hard membrane layer and adhesive coating is wound into the operation of cylinder shape once more]
Be wound into the cylinder shape owing to will be provided with the coverlay of hard membrane layer and adhesive coating by this (c) operation, thus compare easier carrying than the tabular layered product of same amount etc., thus can obtain the good advantage of rate of delivery.
More than, the manufacture method of the 1st optical information recording medium of the present invention with transparent sheet is illustrated, but the present invention is not limited to this, for example, be used on the surface of coverlay, being provided with (a) operation of adhesive coating and hard membrane layer and (b) operation both can carry out continuously or simultaneously at same device, also can carry out with opposite order.
In addition, the 2nd optical information recording medium of the present invention is characterised in that with the manufacture method of transparent sheet, process
(d) on a face of the coverlay that is wound into the cylinder shape, apply radiation-curing resin coating liquid continuously, and, the operation of hard membrane layer is set by making its curing to the formed Continuous irradiation ultraviolet ray of filming;
(e) operation of adhesive coating is set continuously on another face of above-mentioned coverlay; With
(f) the above-mentioned coverlay that will be provided with above-mentioned hard membrane layer and above-mentioned adhesive coating is punched to discoid operation.
Below, each operation is described.
Here and since the present invention's the 2nd optical information recording medium with (d) in the manufacture method of transparent sheet and (e) operation operation is identical with (a) in the manufacture method of transparent sheet and (b) with the 1st optical information recording medium, therefore omit detailed explanation.Also have, (d) operation and (e) operation also both can in same device, carry out continuously or simultaneously, also can carry out with opposite order.
[(f) coverlay that will be provided with hard membrane layer and adhesive coating is punched to discoid operation]
In this (f) operation, the coverlay that is provided with hard membrane layer and adhesive coating is punched to the size of regulation, i.e. discoid with the identical size of substrate.
In addition, before (f) operation, have in order to improve rate of delivery under the situation of the operation that the coverlay that will be provided with hard membrane layer and adhesive coating is wound into the cylinder shape, can be after this be provided with the coverlay of hard membrane layer and adhesive coating in output, temporarily becoming under the plane state, use cut-out drift etc. is die-cut into identical size with substrate continuously.
Then, by the coverlay that is provided with hard membrane layer and adhesive coating except die-cut position is wound into the cylinder shape once more, can be easy to reclaim rubbish by die-cut generation.
In addition, in this (f) operation, be punched to the coverlay that is provided with hard membrane layer and adhesive coating discoid, if but at this moment mold release film were arranged in the surface attachment of adhesive coating, 3 layers the method for only removing behind these 3 layers of only die-cut hard membrane layer, coverlay and the adhesive coatings except that above-mentioned mold release film beyond the die-cut position then could be adopted.According to this method, can be formed on the state that only keeps the punched coverlay that is provided with hard membrane layer and adhesive coating on the mold release film.Also have, also the coverlay of this state can be wound into the cylinder shape once more.
As mentioned above, according to the optical information recording medium transparent sheet of the of the present invention the 1st and the 2nd optical information recording medium with the manufacture method manufacturing of transparent sheet, no matter be long laminar (cylinder shape), still discoid, owing to all under the condition of not using spin-coating method, apply continuously and make the operation of its curing that hard membrane layer is set, therefore all have the good excellent results of thickness and precision by this.In addition, and the every situation that hard membrane layer is set is compared, had throughput rate more than this high effect by spin-coating method.
Optical information recording medium of the present invention is with in the transparent sheet, have simultaneously the overlayer formed by the coverlay that is provided with adhesive coating and hard membrane layer and for the thin slice of sliver shape (cylinder shape) be configured as discoid after, and be pre-formed to discoid thin slice is directly to stick at least on the collar plate shape layered product of being made up of substrate and recording layer, can produce optical information recording medium of the present invention thus.Therefore, in the optical information recording medium of the present invention as can be known overlayer and hard membrane layer can be set simultaneously, so have high throughput rate.
Below optical information recording medium of the present invention is described.
Optical information recording medium of the present invention is characterised in that the optical information recording medium transparent sheet that has recording layer and the invention described above on substrate at least.
Below, each inscape of optical information recording medium of the present invention is described.
＜substrate 〉
Substrate can be exemplified as, for example glass; Acryl resin such as polycarbonate, polymethylmethacrylate; Vinyl chloride resin such as polyvinyl chloride, vinyl chloride copolymer; Epoxy resin; Unbodied polyolefin; Polyester; Metals such as aluminium etc. also can be used in combination these as required.Wherein, from viewpoints such as moisture-proof, dimensional stability and prices, optimization polycarbonate, unbodied polyolefin, special optimization polycarbonate.
The thickness of substrate is preferably the scope of 1.1 ± 0.3mm.
On the surface of substrate, be formed with concavo-convex (the pre-groove) of tracking with information such as groove or presentation address signals.This pre-groove (pregroove) preferably with resin material injection molding formings such as polycarbonate or extrusion molding the time, is formed directly on the substrate.
In addition, also can form pre-groove by pre-groove layer is set.As the material of pre-groove layer, can use at least a monomer (perhaps oligomer) in acrylic acid monoesters, diester, three esters and four esters and the potpourri of Photoepolymerizationinitiater initiater.When forming pre-groove layer for example, at first the parent form (stamper) of making in precision goes up the mixed liquor that coating is made up of above-mentioned acrylate and polymerization initiator, again after this coating liquid layer is uploaded upper substrate, by substrate or parent form irradiation ultraviolet radiation overlay is solidified, and then make substrate and overlay bonding.Then, can obtain pre-groove layer thus by peeling off substrate from parent form.The bed thickness of pre-groove layer is generally the 0.01-100 mu m range, is preferably the scope of 0.05-50 μ m.
In the present invention, the track pitch of the pre-groove of substrate is preferably the 200-400nm scope, more preferably the 250-350nm scope.
In addition, the degree of depth of pre-groove is preferably the 10-150nm scope, more preferably 20-100nm scope, more preferably 30-80nm scope.In addition, its half-breadth value is preferably the 50-250nm scope, more preferably the 100-200nm scope.
In addition, when following reflection layer is set, on the substrate surface that the reflection layer side is set, be preferably formed undercoat, purpose is to improve planarity, raising bonding force.
Material as this undercoat, can be exemplified as, for example, polymethylmethacrylate, acrylic acid methacrylic acid copolymer, styrene maleic anhydride copolymer, polymer substances such as polyvinyl alcohol (PVA), N-methylol third rare acid amides, styrene ethylene base toluene multipolymer, chlorosulfonated polyethylene, cellulose nitrate, polyvinyl chloride, chloridized polyolefin, polyester, polyimide, vinyl acetate vinyl chloride copolymer, ethylene vinyl acetate copolymer, tygon, polypropylene, polycarbonate; Surface modifiers such as silane coupling agent.
Undercoat can be by with above-mentioned material dissolving or after being scattered in appropriate solvent and being modulated to coating liquid, should apply liquid with coating methods such as spin coating, dip-coating, extrusion coatings and be coated on the substrate surface and form.The bed thickness of undercoat is generally the 0.005-20 mu m range, is preferably the 0.01-10 mu m range.
＜recording layer 〉
Preferably contain the pigment that has very big absorption in the optical maser wavelength zone in the recording layer, particularly, preferably contain the pigment that has very big absorption in this wavelength region may in order under the laser of the following wavelength of 500nm, can to write down and to reproduce.As employed pigment, can be exemplified as, for example, cyanines pigment, oxonols pigment (オ キ ソ ノ one Le), metal complex class pigment, azopigment, phthalocyanine dye etc.
Specifically can be exemplified as the spy and open flat 4-74690 communique, Te Kaiping 8-127174 communique, Te Kaiping 11-53758 communique, Te Kaiping 11-334204 communique, Te Kaiping 11-334205 communique, Te Kaiping 11-334206 communique, Te Kaiping 11-334207 communique, the spy opens the 2000-43423 communique, the spy opens the 2000-108513 communique, open the middle pigments of putting down in writing such as 2000-158818 communique with the spy, perhaps, triazole, triazine, cyanines, part cyanines, amino butadiene, phthalocyanine, cinnamic acid, the redox pigment, azo, the oxonols benzoxazole, pigments such as benzotriazole, preferred cyanines, amino butadiene, benzotriazole, phthalocyanine.
Recording layer can form by following operation: above-mentioned dyestuff and the bond that adds as required are dissolved in appropriate solvent, behind the modulation coating liquid, this coating liquid is coated on the pre-rooved face of aforesaid substrate or the reflection layer surface and forms and film, carry out drying afterwards.In addition, also can in coating liquid, add various adjuvants such as antioxidant, UV absorbing agent, plastifier and lubricant according to purpose.
In addition, as the method for dissolution process pigment and bond, can be suitable for methods such as ultrasonic Treatment, homogenizer processing, dispersion treatment, mulling processing, stirrer stir process.
Solvent as recording layer coating liquid can be exemplified as esters such as butyl acetate, cellosolve acetate; Ketone such as MEK, cyclohexanone, methyl isobutyl ketone; Methylene chloride, 1, chlorinated hydrocabons such as 2-ethylene dichloride, chloroform; Acid amides such as dimethyl formamide; Hydrocarbon such as cyclohexane; Ethers such as tetrahydrofuran, ether, diox; Alcohol such as ethanol, n-propanol, isopropyl alcohol, normal butyl alcohol, diacetone alcohol; 2,2,3, fluorine kind solvents such as 3-tetrafluoropropanol; Glycol ethers such as glycol monoethyl ether, ethylene glycol monoethyl ether, propylene glycol monomethyl ether etc.Consider the dissolubility of employed pigment and bond, above-mentioned solvent both can use separately, also can be suitably also with more than two kinds.
As the example of bond, can be exemplified as natural organic high-molecular materials such as gelatin, cellulose derivative, glucosan, rosin, rubber; And hydrocarbon resin such as polyurethane, tygon, polypropylene, polystyrene, polyisobutylene; Vinyl resins such as polyvinyl chloride, Vingon, polyvinyl chloride polyvinyl acetate ester copolymer; Acryl resin such as polymethyl acrylate, polymethylmethacrylate; Polyvinyl alcohol (PVA); Haloflex; Epoxy resin; Butyral resin; Rubber derivative; Synthetic organic polymers such as the initial stage condensation product of heat-curing resins such as phenol formaldehyde resin etc.When mix using bond as the material of recording layer, the use amount of bond is preferably 0.01-50 with respect to pigment and doubly measures (mass ratio) scope, more preferably 0.1-5 times of weight range.Contain bond in the recording layer by making, also can improve the storage stability of recording layer.
So the concentration of pigment is generally 0.01-10 quality % scope in the coating liquid of modulation, is preferably 0.1-5 quality % scope.
As coating method, can be exemplified as spray-on process, spin-coating method, infusion process, rolling method, scraper plate method, doctor roll method, silk screen print method etc.Recording layer both can be that individual layer also can be a multilayer.The bed thickness of recording layer is generally the 20-500nm scope, is preferably the 50-300nm scope.
In addition, as application temperature, if just no problem in 23-50 ℃, but preferred 24-40 ℃, more preferably 25-37 ℃.
In order to improve the photostability of this recording layer, can contain various anti-stripping agents in the recording layer.
As anti-stripping agent, generally can use the creating singlet oxygen by using quencher.As the creating singlet oxygen by using quencher, can use the known material that is documented in the publications such as patent specification.
As its object lesson, can enumerate the spy and open clear 58-175693 communique, the spy opens clear 59-81194 communique, the spy opens clear 60-18387 communique, the spy opens clear 60-19586 communique, the spy opens clear 60-19587 communique, the spy opens clear 60-35054 communique, the spy opens clear 60-36190 communique, the spy opens clear 60-36191 communique, the spy opens clear 60-44554 communique, the spy opens clear 60-44555 communique, the spy opens clear 60-44389 communique, the spy opens clear 60-44390 communique, the spy opens clear 60-54892 communique, the spy opens clear 60-47069 communique, the spy opens clear 63-209995 communique, Te Kaiping 4-25492 communique, special fair 1-38680 communique, each communique such as special fair 6-26028 communique, No. 350399 instructionss of Deutsche Bundespatent, and the material of record in Japanization association will in October, 1992 number the 1141st page etc.
The content of anti-stripping agents such as above-mentioned creating singlet oxygen by using quencher 0.1-50 quality % scope normally in all solid state components of recording layer, preferred 0.5-45% quality %, more preferably 3-40 quality %, preferred especially 5-25 quality %.
On the surface of formed recording layer,, also can form middle layer (restraining barrier) in order to improve with tectal adaptation and to preserve pigment.The layer that the restraining barrier is made up of materials such as the oxide of any the above atom among Zn, Si, Ti, Te, Sm, Mo, the Ge etc., nitride, carbonide, sulfide.In addition, the restraining barrier also can be as ZnS-SiO
2The structure of compoundization.The restraining barrier can be by formation such as spraying plating, evaporation, ion platings, and its thickness is preferably 1-100nm.
＜reflection layer 〉
Reflection layer is arranged on the optional layer between substrate and the recording layer, and purpose is the reflectivity when improving information reproduction.Reflection layer can be by forming on aforesaid substrate with respect to the reflectivity of laser in high light reflective material evaporation, spraying plating or ion plating.The bed thickness of reflection layer is generally the 10-300nm scope, is preferably 50-200nm.
Also have, above-mentioned reflectivity is preferably more than 70%.
As the high light reflective material of reflectivity, can be exemplified as metal and semimetal or stainless steels such as Mg, Se, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Re, Fe, Co, Ni, Ru, Rh, Pd, Tr, Pt, Cu, Ag, Au, Zn, Cd, Al, Ga, In, Si, Ge, Te, Pb, Po, Sn, Bi.These light reflective materials both can use separately, perhaps also can make up more than two kinds or as alloy and use.Among these, preferably Cr, Ni, Pt, Cu, Ag, Au, Al and stainless steel.Preferred especially Ag, Au, Al or their alloy, most preferably Au, Ag or their alloy.
Optical information recording medium of the present invention can carry out recording of information, reproduction by the following method.At first, make the optical information recording medium rotation, shine bluish violet color laser recording light such as (for example, wavelength 405nm) from cover layer side by object lens simultaneously with the linear velocity (0.5-10m/ second) of regulation or the constant angular velocity of regulation.By this irradiates light, its local temperature can rise after recording layer absorbed this light, for example, changed its optical characteristics by generating depressed part, thus recorded information.The reproduction of Ji Lu information as described above can make the optical information recording medium rotation by the Constant Linear Velocity with regulation, from cover layer side irradiation bluish violet color laser, detects its reflected light and carries out simultaneously.
As LASER Light Source with the oscillation wavelength below the 500nm, can be exemplified as, for example have the bluish violet semiconductor laser of the oscillation wavelength of 390-415nm scope, the bluish violet SHG laser of center oscillation wavelength 425nm etc.
In addition, in order to improve recording density, the NA of the object lens that use in the pick-up is preferably more than 0.7, more preferably more than 0.85.
[embodiment]
Further describe the present invention according to embodiment below, but the present invention is not limited to this.
[embodiment 1]
The making of＜optical information recording medium 〉
Has spiral helicine groove (dark 100nm, wide 120nm, track pitch 320nm) thickness 1.1mm, the injection moulding polycarbonate of diameter 120mm (Supreme Being people society system polycarbonate, trade name: パ Application ラ イ ト AD5503) on the face with groove of substrate, form the thick reflection layer of 100nm by spraying plating Ag.
Then,, add the blue GN (phthalocyanines dye, Ciba Specialty Chemicals society system) of the cured Sol in 20g Europe in the 3-tetrafluoropropanol, carry out 2 hours ultrasonic Treatment, form with coating liquid thereby modulate recording layer to make it dissolving to 1 liter 2,2,3.Make on one side rotating speed change to 4000rpm from 300, on one side under 23 ℃, the condition of 50%RH, the coating liquid that will modulate with spin-coating method is coated on the reflection layer.Then, kept 1-4 hour under 23 ℃, 50%RH and form recording layer, its thickness is 100nm.Then, spraying plating thickness is the ZnS-SiO of 5nm on recording layer
2Thereby, form middle layer (restraining barrier).
＜optical information recording medium the manufacturing of transparent sheet 〉
[formation of hard membrane layer]
At first, coverlay (the polycarbonate membrane of cylinder shape will be wound into, Supreme Being people ピ ユ ア エ-ス, thickness: 75 μ m, single face has mold release film) the top export the area of application of regulation to, after removing the mold release film of giving in advance, apply liquid (ultraviolet curable resin, ダ イ キ ユ リ ア SD715, big Japanese ィ Application キ system) from its surperficial top to terminal continuously coating radiation-curing resin, after formation is filmed, in turn to this Continuous irradiation 0.23J/cm that films
2Radioactive ray (high-pressure sodium lamp), radiation-curing resin (ultraviolet curable resin) is solidified, form hard membrane layer.Then, the coverlay that is provided with this hard membrane layer is wound into the cylinder shape.
[formation of adhesive coating]
Ethyl acetate/toluene=1/1) and isocyanates crosslinking chemical (solvent: ethyl acetate/toluene=1/1) mix modulation sticker coating liquid A with acrylic copolymer (solvent: with 100: 1 (mass ratio).Use this sticker coating liquid A, use indirect method, on the surface of mold release film, adhesive coating is set.
Transport on one side the tygon system mold release film that is wound into the cylinder shape, at the surface applied sticker of this mold release film apply liquid A on one side, make dried thickness reach 20 μ m.Then, under 100 ℃, make its drying in the arid region, thereby obtain being provided with the mold release film of adhesive coating.
[the optical information recording medium manufacturing of transparent sheet]
In coverlay, be provided with on the opposing face of face of hard membrane layer, adhere to the mold release film that is provided with adhesive coating, make this face be contacted with adhesive coating.Then, this coverlay that is provided with hard membrane layer and adhesive coating is wound into the cylinder shape once more, under this state, kept 72 hours at 23 ℃, the atmosphere of 50%Rh.
Then, with being provided with the coverlay output of hard membrane layer and adhesive coating, be punched to the shape identical with aforesaid substrate.Thus, obtained to have simultaneously the optical information recording medium transparent sheet of overlayer (being provided with the coverlay of adhesive coating) and hard membrane layer.
Afterwards,, peel off the mold release film of adhesive coating side, by the pressing method that adopts cylinder above-mentioned middle layer and adhesive coating are fitted, thereby produce optical information recording medium from discoid optical information recording medium transparent sheet.
＜estimate
(evaluation of the thickness and precision of hard membrane layer)
To the optical information recording medium of making, on 64 points of total of 8 points of circumferencial direction (45 ° of intervals) of disc-shape, 8 points of radial direction (5mm at interval), make laser extensometer (LT8020) with キ-エ Application ス, measurement can be used as the thickness of point-to-point transmission thin slice range observation (hard membrane layer+coverlay+adhesive coating), obtains thickness deviation T by the value of its (maximal value-mean value), the value of (mean value-minimum value)
1In addition, to the optical information recording medium that other and said method are made in the same manner being set the hard membrane layer, measure the point-to-point transmission thin slice apart from (coverlay+adhesive coating) with identical method, and obtain the irregular T of thickness except not applying
2Then, T
1-T
2Thickness deviation as hard membrane layer is estimated.The results are shown in table 1.
[embodiment 2]
Except in embodiment 1, after on the face of coverlay hard membrane layer being set, be not wound into the cylinder shape, but on the opposing face that is provided with the dura mater aspect of coverlay, adhesion is provided with the mold release film of adhesive coating, this face is contacted with beyond the adhesive coating, and other has made the optical information recording medium of embodiment 2 according to the method identical with embodiment 1.
To the optical information recording medium of made, carry out the evaluation identical with embodiment 1.It the results are shown in table 1.
[comparative example 1]
Except in embodiment 1, the following setting beyond overlayer and the hard membrane layer made the optical information recording medium of comparative example 1 in the same manner with embodiment 1.
To the optical information recording medium of making, carry out the evaluation identical with embodiment 1.It the results are shown in table 1.
[formation of overlayer and hard membrane layer]
On the middle layer that forms by spraying plating (restraining barrier), with spin-coating method rotating speed coating ultraviolet curing sticker (the 2nd printing ink SD-347 with 100-300rpm, dissolution rate to pigment is 0.05 quality %), in the above, stack is configured as the coverlay (polycarbonate membrane of the shape identical with substrate in advance, Supreme Being people ピ ユ ア エ-ス, thickness: 80 μ m, single face has mold release film).Then,,, use the ultraviolet radiator irradiation ultraviolet radiation, solidify, form overlayer by making adhesive coating Yi Bian on whole, sprawl adhesive coating Yi Bian make rotating speed change to 4000rpm from 300.
Then, on overlayer, with spin-coating method with the rotating speed of 100-300rpm coating ultraviolet curable resin coating liquid (ダ イ キ ユ リ ア SD-715, big Japanese ink system), afterwards, Yi Bian make rotating speed change to 4000rpm from 300, Yi Bian at whole upper berth spread-coating film.Then,, make curing of coating, hard membrane layer is set by the irradiation ultraviolet radiation of filming to this.
[comparative example 2]
Except in embodiment 1, the following setting beyond overlayer and the hard membrane layer made the optical information recording medium of comparative example 2 in the same manner with embodiment 1.
To the optical information recording medium of making, carry out the evaluation identical with embodiment 1.It the results are shown in table 1.
[formation of overlayer and hard membrane layer]
Transport on one side the tygon system mold release film that is wound into the cylinder shape, on one side the sticker that in the surface applied embodiment 1 of this mold release film, uses apply liquid A so that dried thickness reaches 20 μ m.Then, under 100 ℃, make its drying in the arid region, thereby obtain being provided with the mold release film of adhesive coating.And then, on the coverlay that the is wound into the cylinder shape equally surface that mold release film is not set of (thickness: 80 μ m, single face has mold release film for polycarbonate membrane, Supreme Being people ピ ユ ア エ-ス), adhere to and be provided with the mold release film of adhesive coating, and make this face be contacted with adhesive coating.
Then, the coverlay that is provided with adhesive coating is wound into the cylinder shape once more, under this state, kept 72 hours at 23 ℃, the atmosphere of 50%Rh.Then,, be punched to the shape identical, form overlayer with substrate with being provided with the coverlay output of this adhesive coating.
On the middle layer (restraining barrier) that forms by spraying plating, adhere to this overlayer, and make the middle layer be contacted with adhesive coating.Then, on this overlayer, with rotating speed coating ultraviolet curable resin coating liquid (the ダ イ キ ユ リ ア SD-715 of spin-coating method with 100-300rpm, big Japanese ink system), afterwards, Yi Bian make rotating speed change to 4000rpm from 300, Yi Bian at whole upper berth spread-coating film.Then,, make curing of coating, hard membrane layer is set by the irradiation ultraviolet radiation of filming to this.
[table 1]
| The thickness deviation of hard membrane layer (μ m) | |
| Embodiment 1 | ?10±0.5 |
| Embodiment 2 | ?10±0.5 |
| Comparative example 1 | ?10±2.0 |
| Comparative example 2 | ?10±2.0 |
As shown in Table 1, the optical information recording medium among the embodiment 1 and 2 is compared with comparative example with transparent sheet, and the thickness deviation of hard membrane layer is little, and thickness and precision is good.
In addition, when the optical information recording medium that possesses embodiment 1,2 is investigated with the throughput rate of the optical information recording medium of the optical information recording medium of transparent sheet and comparative example 1,2, possess optical information recording medium among the embodiment with the optical information recording medium of transparent sheet owing to be to make by the layered product that adheres to overlayer and hard membrane layer, therefore overlayer and hard membrane layer can be set once, thereby have the high excellent results of throughput rate.
In contrast, because the optical information recording medium in the comparative example is to form each sheet hard membrane layer by spin-coating method in the above again after adhering to the coverlay (overlayer) that is provided with adhesive coating earlier, therefore compare with embodiment 1,2, its throughput rate is relatively poor.
According to the present invention, the manufacture method of the good optical information recording medium of throughput rate height and thickness and precision with transparent sheet then can be provided, with the optical information recording medium of this manufacture method manufacturing with transparent sheet and have the optical information recording medium of this optical information recording medium with transparent sheet.
Claims (4)
1. an optical information recording medium is with the manufacture method of transparent sheet, it is characterized in that, process: on the one side of the coverlay that is wound into the cylinder shape, apply radiation-curing resin coating liquid continuously, to the formed Continuous irradiation radioactive ray of filming, the operation of hard membrane layer is set by making its curing; The operation of adhesive coating is set on the another side of described coverlay continuously; Be wound into the operation of cylinder shape once more with the described coverlay that will be provided with described hard membrane layer and described adhesive coating.
2. an optical information recording medium is with the manufacture method of transparent sheet, it is characterized in that, process: on the one side of the coverlay that is wound into the cylinder shape, apply radiation-curing resin coating liquid continuously, to the formed Continuous irradiation radioactive ray of filming, the operation of hard membrane layer is set by making its curing; The operation of adhesive coating is set on the another side of described coverlay continuously; Be punched to discoid operation with the described coverlay that will be provided with described hard membrane layer and described adhesive coating.
3. an optical information recording medium transparent sheet is characterized in that, forms with claim 1 or the described manufacture method manufacturing of claim 2.
4. an optical information recording medium is characterized in that, has the described optical information recording medium transparent sheet of recording layer and claim 3 on substrate successively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003066057 | 2003-03-12 | ||
| JP2003066057A JP2004273079A (en) | 2003-03-12 | 2003-03-12 | Transparent sheet for optical information recording medium, method for manufacturing same, and optical information recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1530945A true CN1530945A (en) | 2004-09-22 |
| CN100354960C CN100354960C (en) | 2007-12-12 |
Family
ID=32767927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100082031A Expired - Fee Related CN100354960C (en) | 2003-03-12 | 2004-03-01 | Transparent slice for optical information recording medium, producing method thereof and optical information recording medium |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7078084B2 (en) |
| EP (1) | EP1457980A3 (en) |
| JP (1) | JP2004273079A (en) |
| KR (1) | KR20040080981A (en) |
| CN (1) | CN100354960C (en) |
| TW (1) | TWI301972B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002157783A (en) * | 2000-11-15 | 2002-05-31 | Sharp Corp | Optical information recording medium |
| TWI308749B (en) * | 2002-03-07 | 2009-04-11 | Fuji Corp | Optically information-recording medium |
| DE102006062457A1 (en) * | 2006-12-28 | 2008-07-03 | Bayer Innovation Gmbh | Optical storage layer useful for recording analog or digital data and information comprises a photoaddressable polymer and an additive |
| JP6655763B2 (en) * | 2017-05-23 | 2020-02-26 | リンテック株式会社 | Roll and roll manufacturing method |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3112467B2 (en) | 1990-06-15 | 2000-11-27 | 日立マクセル株式会社 | Optical information recording medium |
| US5281371A (en) * | 1990-11-16 | 1994-01-25 | Canon Kabushiki Kaisha | Method and apparatus for forming substrate sheet for optical recording medium |
| US5726969A (en) * | 1994-12-28 | 1998-03-10 | Matsushita Electric Industrial Co., Ltd. | Optical recording medium having dual information surfaces |
| JPH10208319A (en) * | 1997-01-28 | 1998-08-07 | Kitano Eng Kk | Method for sticking disk substrates together |
| JP2000067468A (en) | 1998-08-25 | 2000-03-03 | Teijin Ltd | Optical disk and its production |
| TW453944B (en) * | 1998-11-02 | 2001-09-11 | Rohm & Amp Haas Company | High quality plastic sheet, apparatus for producing same and their optical and electronic display applications |
| DE10001160A1 (en) * | 2000-01-13 | 2001-07-19 | Topac Multimediaprint Gmbh | Production of a substrate used in the production of optical storage media, e.g. compact discs comprises continuously coating a plastic film strip with a liquid ultraviolet-hardenable material, drying and coiling for further use |
| JP2002042379A (en) * | 2000-07-19 | 2002-02-08 | Sony Corp | Multilayered optical recording medium and its manufacturing method |
| JP2002269821A (en) * | 2001-03-06 | 2002-09-20 | Fuji Photo Film Co Ltd | Optical information recording medium |
| US7241549B2 (en) * | 2001-09-18 | 2007-07-10 | Ricoh Company, Ltd. | Information recording medium |
| TWI254305B (en) * | 2001-12-14 | 2006-05-01 | Fuji Photo Film Co Ltd | Method of manufacturing optical information recording media |
| DE60326895D1 (en) * | 2002-01-23 | 2009-05-07 | Fujifilm Corp | Optical information recording medium |
-
2003
- 2003-03-12 JP JP2003066057A patent/JP2004273079A/en not_active Abandoned
-
2004
- 2004-02-27 KR KR1020040013459A patent/KR20040080981A/en not_active Application Discontinuation
- 2004-03-01 CN CNB2004100082031A patent/CN100354960C/en not_active Expired - Fee Related
- 2004-03-08 EP EP04251337A patent/EP1457980A3/en not_active Withdrawn
- 2004-03-11 TW TW093106416A patent/TWI301972B/en not_active IP Right Cessation
- 2004-03-12 US US10/798,424 patent/US7078084B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP1457980A3 (en) | 2007-06-13 |
| TW200425133A (en) | 2004-11-16 |
| TWI301972B (en) | 2008-10-11 |
| US20040180172A1 (en) | 2004-09-16 |
| KR20040080981A (en) | 2004-09-20 |
| CN100354960C (en) | 2007-12-12 |
| US7078084B2 (en) | 2006-07-18 |
| EP1457980A2 (en) | 2004-09-15 |
| JP2004273079A (en) | 2004-09-30 |
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